Starnheim Courser

a Pegasus creature is cast — 78 cards in the game can cause this (Starnheim Courser is one).

1. Thurid, Mare of Destiny — When Starnheim Courser is cast, Thurid, Mare of Destiny copies a spell

an enchantment it makes cheaper to cast — 3,713 cards in the game can cause this (Starnheim Courser is one).

Starnheim Courser reduces what:

1. Urabrask // The Great Work — costs
2. Sidequest: Card Collection // Magicked Card — costs
3. Bow of Nylea — costs
4. Trail of Evidence — costs
5. Elesh Norn // The Argent Etchings — costs
6. Sidequest: Catch a Fish // Cooking Campsite — costs
7. Yotia Declares War — costs
8. Parasitic Implant — costs
9. Urza's Saga — costs

3,704 other cards care about it too. These are the ones with the most connections.

an artifact it makes cheaper to cast — 4,531 cards in the game can cause this (Starnheim Courser is one).

Starnheim Courser reduces what:

1. Storm the Vault // Vault of Catlacan — costs
2. Thopter Spy Network — costs
3. Bident of Thassa — costs
4. Ongoing Investigation — costs
5. Obsessive Pursuit — costs
6. Thorough Investigation — costs
7. Shiny Impetus — costs
8. Death to Our Enemies — costs
9. Fae Offering — costs
10. Metallurgic Summonings — costs

4,521 other cards care about it too. These are the ones with the most connections.

anything attacks — 17,934 cards in the game can cause this (Starnheim Courser is one).

When Starnheim Courser attacks:

1. Far Fortune, End Boss — deals 1 damage
2. Temmet, Naktamun's Will — draws you 1 card
3. Grim Javelineer — gives +1/+0
4. Invisible Woman — triggers
5. Caesar, Legion's Emperor — sacrifices a creature
6. Guide of Souls — triggers
7. Campsite Cuisine — sacrifices a Food
8. Gossip's Talent — triggers
9. Banon, the Returners' Leader — draws and discards
10. Toph, Earthbending Master — puts a counter on a permanent

188 other cards care about it too. These are the ones with the most connections.

a creature attacks — 17,934 cards in the game can cause this (Starnheim Courser is one).

When Starnheim Courser attacks:

1. Adaptive Omnitool — searches a library
2. Anthem of Rakdos — gives +2/+0
3. Kindred Discovery — draws you 1 card
4. Invasion of New Capenna // Holy Frazzle-Cannon — puts counters on a permanent
5. Chorale of the Void — brings a card back
6. Anim Pakal, Thousandth Moon — puts a +1/+1 counter on itself
7. Saw — sacrifices a creature
8. Gisa's Favorite Shovel — makes an opponent sacrifice a creature
9. Ultima Weapon — kills a creature an opponent controls
10. Total War — kills a creature

305 other cards care about it too. These are the ones with the most connections.

a creature blocks — 17,934 cards in the game can cause this (Starnheim Courser is one).

When Starnheim Courser blocks:

1. Mage Hunters' Onslaught — makes a player lose 1 life
2. Carnage Gladiator — makes a player lose 1 life
3. Barrow-Blade — strips abilities
4. Heat of Battle — deals 1 damage
5. Battle Strain — deals 1 damage
6. Favor of the Woods — gains you 3 life
7. Tide of War — sacrifices a creature
8. Dead-Iron Sledge — kills a creature
9. Dwindle — kills a creature
10. Shield of the Righteous — triggers

33 other cards care about it too. These are the ones with the most connections.

a nontoken creature attacks — 17,934 cards in the game can cause this (Starnheim Courser is one).

When Starnheim Courser attacks:

1. Mardu Ascendancy — makes a token
2. Basri Ket — makes a token
3. Militia's Pride — makes a token

a creature enters the battlefield — 19,800 cards in the game can cause this (Starnheim Courser is one).

When Starnheim Courser enters:

1. Slash, Reptile Rampager — deals 2 damage
2. Ray Fillet, Wave Warrior — puts a counter on itself
3. The Neutrinos — gets +1/+0
4. Wingnut, Bat on the Belfry — grants flying, haste and menace
5. Aetherstorm Roc — puts a counter on a permanent you control
6. Raphael, Most Attitude — exiles a card from your library

676 other cards care about it too. These are the ones with the most connections.

anything enters the battlefield — 26,499 cards in the game can cause this (Starnheim Courser is one).

1. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When Starnheim Courser enters, Prowl, Stoic Strategist // Prowl, Pursuit Vehicle puts a +1/+1 counter on itself

214 other cards care about it too. These are the ones with the most connections.